Israel's Dead Sea is perhaps the best, most credible of all geochronometers available simply because it is a closed system. At one end of the valley lies the Afar region, where Donald Johanson discovered the infamous "Lucy". Textbook authorities date the Afar region at three million years of age (Johanson and Edy, 1981, 187). At the other end of this unique valley which is below sea level, fresh water from the Sea of Galilee flows through the Jordan River, into the Dead Sea which is the lowest point on earth. The only outlet for the Dead Sea is evaporation. Water is evaporated at the same rate in which it enters the sea, however, salt is not evaporated, allowing the salt to concentrate in the sea.

The fourteenth edition of the Encyclopaedia Britannica gives the figures needed for the calculation of age: The Dead Sea, which covers an area of 394 square miles, contains approximately 11,600,000,000 tons of salt, and the river Jordan which contains only 35 parts of salt per 100,000 of water, adds each year 850,000 tons of salt to this total.1

Based on these figures, the age is calculated to be a mere 13 thousand years old, quite a difference from the three million years claimed at the other end of the valley. Clearly, this special valley gives ample evidence for a young earth.